Using IIS 10, msql 8, php 8.1, phypmyadmin 5.2

Database upload does not work as per subject. On this sever are Wordpress sites and upload works.

Database size does not seem to be the issue as I tried to upload a 170KB sql file. PHP is setup to allow 100MB.

ERROR on import:

No data was received to import. Either no file name was submitted, or the file size exceeded the maximum size permitted by your PHP configuration

I spent far too long trying to resolve this.

Any ideas? Thank you.